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  "date": "2026-10-28",
  "baseline_revision": "d89e03b563eecd3e1ff68ce421d356f9a67a1b4d",
  "feature": "Fixed-BINARY TO_BASE64",
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    "cpu": "Apple M4 Pro",
    "os": "macOS aarch64",
    "jdk": "17.0.12",
    "rust": "1.94.0",
    "profile": "release, no-default-features, system allocator with counting wrapper"
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  "method": {
    "prepared": "Identical BINARY(width) values and nullable schemas. Stock starts on prebuilt GenericRowData or BinaryRowData and executes released generated code in Java. Previous and candidate production Calc start on prepared Arrow Binary or FixedSizeBinary. Rust timers surround production Calc execution and output consumption; previous retains the real scalar JVM callback and argument/result marshalling. Setup, initial JNI input import, output export and perimeter transposes are excluded. Full schema and Arrow output equality checked before timing; length/first/last-byte checksum checked in every trial.",
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    "warmups": 16,
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    "order": "Rotate stock/previous/native each trial, configurations and engines run serially; no concurrent builds or tests.",
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